Sun Titan + Living Death + 9 creatures (other than Sun Titan) in your graveyard
+ Codex Shredder + Phyrexian Altar = infinite sacrifice and ETB
+ Codex Shredder + Phyrexian Altar = infinite sacrifice and ETB
How it works:
- Have Sun Titan, 9 other creatures, and Codex Shredder in your graveyard
- Cast Living Death, returning all 10 creatures to the battlefield
- Return Codex shredder to the battlefield with Sun Titan's ETB ability
- Sacrifice all 10 creatures to Phyrexian Altar, making 10 mana, at least 2 of which is black
- Activate Codex Shredder's second ability, returning Living Death to your hand. You have 5 mana left, 2 or which is black
- Cast Living Death with the five mana left, returning all 10 creatures to the battlefield
- Repeat